In 2012, Viking River Cruises kicked off a dramatic three-year-long fleet expansion by inaugurating six ships. A year later, 10 more identical ships were christened, and another dozen are due in 2014. Viking Idun was one of the original sextuplets -- branded "Longships" named for Norse gods -- to hit the water, and the six sisters have made quite a splash on the river scene since their debuts. German-built Viking Idun and its sister ships represent a new take on river hospitality, one in which a sleek, Scandinavian ambience is the antithesis of river's traditionally fusty vessels.
What first strikes you as you step onboard? Sunlight. Streaming in through the glass-enclosed, two-story atrium is enough light to allow real flowers to grow. With backlit marble panels rising above a terrazzo floor and wood-and-glass staircase, and pale, earth-toned decor, the space has energy and natural appeal. If the ambience reminds some of Seabourn's Odyssey class, that's not a coincidence -- the vessels share the same lead designer, Norwegian firm Yran & Storbraaten.
But beyond the airy vibe of its public spaces, Viking Idun floats a whole raft of features new to river cruising in Europe.
Fittingly for a line named after Scandinavian conquerors, there is a sense of minimalism on Idun. You can perhaps best see the efficiency and maximization of available area onboard in the surprising new signature spaces that have been conjured: the Aquavit Terrace, the two largest true suites on a riverboat in Europe (each with separate living room and bedroom), not to mention seven slightly smaller true suites with separate living and sleeping rooms, and an increased number of cabins with full and French balconies.
Don't be fooled, though; creating those spaces was more hard work than magic. The designers' creation of such new spaces required a lot of rethinking about the basic structure of river ships. To fit under the bridges and through the locks of Europe's inland waterways, riverboats have to meet specific size requirements. If length or depth is extended past those limits, the ship won't sail.
As a workaround, designers blunted the traditional pointy-nosed bow of Viking's ships to provide more space. The result was Aquavit Terrace. A lovely open-air cafe on the ship's bow, the venue provides something of a river rarity: an alternative casual eatery with indoor/outdoor seating.
It also positioned interior corridors off-center to accommodate cabins -- full balconies on one side and narrower cabins, some elevated to suites with separate sleeping and living areas, placed sideways on the other side.
Less visible, but no less cutting-edge, are the ship's "green" advances, including hybrid diesel-electric engines which burn less fuel and produce 20 percent fewer emissions, making longships cleaner and quieter than their competitors. There are even solar panels on the sun deck that help to fuel the engines. And the ship's chef maintains an organic garden on Idun's upper deck during growing season.
The ride onboard is slow and smooth as you pass by scenery that includes the Rhine Gorge -- or Upper Middle Rhine Valley -- a UNESCO World Heritage site littered with history-rich vistas of castles and medieval towns.